creepy guy beside me 3rd period

yay.
this is going to be my first non-dream post!
its about something i'm really worried about.
well..someone!
we sit in pairs in one of my classes and 2 of my friends decided to sit together
therefore, i sat alone at the farthest back of the room alone.
there was this guy who never talks to anyone and just whispers when the teacher forces him to talk. he sat to my right..a couple metres away.
one day, he suddenly sat in the empty seat next to me, and i thought "oh its ok..maybe he just can't see the board clearly." but then his friend came back from vacation and he still remained sitting beside me.
fine fine.
whatever.
so here's the scary part.
one day, me and my friend were talking (we had a supply teacher that day) and my friend suddenly looked scared and told me in chinese "whatever you do, DONT look at the person beside you."
so i thought to myself..fine..maybe hes like..changing or something.
hahaha =P i even sniffed once even though my sense of smell is REALLY BAD
then around 2 minutes later my friend said it was okay to look. the wait has made me so afraid of what he was doing that i didnt look at him after. i asked my friend what was going on.
and turns out his awkward habits and quiet self was just a veil, uncovering a very nasty monster on the inside.
i'm now afraid to go to my 3rd period classes.
if i change seats, my friend would be mentally disrupted by this scary guy since they were eye-to-eye and my friend saw what was happening.
if i sit beside him, im threatening my own existence and harming myself.
i want to run away..
run away
from this scary scary world.
a world where differences are unavoidable, a world where the right can be wronged. eternally.